3and 1
Input |
---|
3 + 1 |
Result |
4 |
Number name |
four |
Manipulatives illustration |
| + | | = | 3 | | 1 | | 4 |
Percent increase |
3 + 1 = 4 is 33.33% larger than 3. |
Typical human computation times |
age 6: 3.7 seconds | age 8: 2 seconds | age 10: 1.2 seconds | age 18: 0.84 seconds (ignoring concentration, repetition, variations in education, etc.) |